JPS62221410A - Magnetic filter equipment - Google Patents

Abstract

PURPOSE:To obtain the titled equipment wherein magnetic particles are easily transferred on magnetic wires and easily separated therefrom by conducting AC current having a plurality of frequency components on the magnetic wires which re parallelly extended in a filter vessel and crossed to a magnetic field wherein intensity is monotonically increased. CONSTITUTION:In such case that fluid to be purified which is introduced through an introduction pipe 2 is passed among the magnetic wires 9, magnetic particles are trapped on the magnetic wires 9. When conducting AC current having a plurality of specific frequencies as a component on the magnetic wires 9 and thereby vibrating the magnetic wires 9 uniformly, such a state that magnetic particles are stuck and separated on/from the magnetic wires 9 is repeated. On the other hand, since a magnetic field is formed so that it is monotonically increased in the direction of an X-axis being the axial direction of the magnetic wires 9, magnetic particles are carried on the magnetic wires 9 in the direction of the X-axis and induced to the second chamber 8. In a second chamber 8, magnetic particles are separated from the magnetic wires 9 by allowing washing water to flow and be discharged through a drainage pipe 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a magnetic filter device that continuously separates and removes minute magnetic particles mixed in a fluid using magnetic force.

[Conventional technology]

FIG. 5 is a perspective view showing the configuration of a conventional magnetic filter device;
FIG. 6 is a sectional view thereof.

In the figure, (1) is a filter container made of non-magnetic material. (2) is an inflow pipe for liquid containing magnetic particles, (3) is an outflow pipe for purified liquid with magnetic particles removed, (4) is a water supply pipe for cleaning water, and (5) is a pipe for separating magnetic particles and This is the drain pipe for washing water. (6) is a partition plate having a plurality of through holes, and a first chamber (7) where liquid containing magnetic particles flows into the filter container (1) and captures the magnetic particles, and a first chamber (7) where the captured magnetic particles are released. It is separated into a second room (8) where the (9) is a plurality of magnetic wires that pass through the through holes of the partition plate (6) and are fixed at both ends to the filter container (1) so as to be parallel to each other; (141 is the liquid in the filter container (1); The vibrator attached to the filter container (1) to vibrate the magnetic wire (9) and magnetic particles is a pair of magnetic poles facing each other with the filter container (1) in between, and the generated magnetic field is intersects the magnetic line (9),
The two magnetic poles are arranged to face each other so that the distance between the two magnetic poles gradually narrows so that the strength of the magnetic field increases monotonically from the first chamber (7) to the second chamber (8). Furthermore, monotonically increasing means
As shown in FIG. 2, which will be described later, the case is shown in which the slope of the magnetic field strength is positive or zero. In the figure, arrows indicate the direction of fluid flow.

Next, the effect will be explained.

In the magnetic gap formed by opposing magnetic poles (15I),
In Figure 5, the magnetic field generated in the Z-axis direction has a strength of
The distribution has a gradient that increases in the axial direction. The magnetic wires (9) in the filter container (1) in this magnetic air gap will become magnetized.

The liquid to be purified entering through the inlet pipe (2) passes between the magnetic wires (9). At this time, a magnetic attraction force proportional to the strength of the magnetic field and the magnitude of the magnetic gradient near the magnetic line acts on the magnetic particles, and the particles are captured by the magnetic line (9).

The liquid, magnetic wire (9), and magnetic particles are forcibly vibrated by a vibrator fixed to the filter container (1),
The captured magnetic particles repeatedly attach to and detach from the magnetic wire (9).

On the other hand, due to the magnetic gradient increasing in the X-axis direction, a magnetic force in the X-axis direction acts on the magnetic particles, so the magnetic particles that are repeatedly attached to and separated from the magnetic line (9) move on the magnetic line (9). It is transported in the X-axis direction, passes through the through hole of the partition plate (6), and is guided to the second room (8).

In the second chamber (8), the magnetic particles are separated from the magnetic wire (9) by flushing with washing water and are discharged through the drain pipe (5). On the other hand, the liquid that has passed between the magnetic lines (9) and from which magnetic particles have been removed flows out through the outflow pipe (3).

[Problem that the invention seeks to solve]

Conventional magnetic filter devices are configured so that the magnetic particles captured by the magnetic wire repeatedly attach to and detach from the magnetic wire due to the vibrations generated by the vibrator. The strength of vibration varies depending on the transmission path. For this reason, strong local vibrations may cause the magnetic particles to separate from the magnetic wire, or conversely, the vibrations may be weak and the magnetic particles may remain attached to the magnetic wire and repeat separation and attachment, preventing the magnetic particles from separating and adhering. There is a problem in that reliable and uniform characteristics cannot be obtained regarding the movement of the magnetic particles captured by the wire on the magnetic wire or the separation from the magnetic wire.

The invention of Party B was made in order to solve this problem, and it is a method to uniformly and reliably generate a state in which magnetic particles captured by magnetic wires repeatedly adhere to and separate from the magnetic wires in a filter container. It is an object of the present invention to provide a magnetic filter device in which magnetic particles can easily move on a magnetic line and in which the magnetic particles can easily separate from the magnetic line.

[Means for solving problems]

The magnetic filter device according to the present invention is arranged in parallel in a filter container into which a fluid containing magnetic particles flows,
It is made by passing an alternating current having a plurality of frequency components through a plurality of magnetic wires that intersect with a magnetic field whose strength monotonically increases.

[For production]

In this invention, an alternating current having a plurality of frequency components is applied to a plurality of magnetic wires that are stretched in parallel in a filter container and intersect with a magnetic field, so that an alternating force acts on the magnetic wires, and the magnetic wires are The wire vibrates in a direction perpendicular to the magnetic field. Therefore, the repeated action of the magnetic particles captured by the magnetic wires adhering to the magnetic wires is uniformly suppressed, and
Do it for sure.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

Fig. 1 is a cross-sectional view of an embodiment of the magnetic filter device according to the present invention, Fig. 2 is a line diagram showing an example of magnetic field distribution, and Fig. 3 is an effect on the magnetic wire when current is applied to the magnetic wire in a magnetic field. FIG. 4 is an explanatory diagram of the vibration form of a magnetic wire whose both ends are fixed.

In Figure 1, symbols (1) to (9) refer to Figures 5 and 6.
Since it is the same as that shown in the figure, the same reference numeral is given and the explanation is omitted. (101 is an electrode to which both ends of a plurality of magnetic wires (9) are fixed, and which supplies an alternating current to the magnetic wires (9), and is connected to the filter container (101) through an insulator (not shown). ) is fixed.

Qll is an adder that adds together the output signals of a plurality of frequency oscillators (121; Q3 is an amplifier that amplifies the vibration signal from the adder 01), and is coupled to the electric signal IIi.

Note that the filter container (1) is placed in the gap between a pair of opposing magnetic poles (not shown) as in FIG. 5, and the magnetic field generated by the magnetic poles crosses the plurality of magnetic lines (9). , 1st
The two magnetic poles are arranged to face each other so that the distance between the two magnetic poles gradually narrows so that the strength of the magnetic field increases monotonically from the second chamber (7) to the second chamber (8). Note that monotonous increase means that when the horizontal axis represents the position in the magnetic line axis direction and the vertical axis represents the magnetic field strength, the slope of the magnetic field strength is positive or zero. Indicates a certain case. In FIG. 1, arrows indicate the flow direction of the liquid containing magnetic particles and the cleaning water.

Next, the operation of this embodiment will be explained.

The fluid to be purified entering through the inlet tube (2) passes between the magnetic wires (9). At this time, a magnetic attraction force proportional to the strength of the magnetic field and the magnitude of the magnetic gradient acts on the magnetic particles, similar to the magnetic filter device shown in FIG. 6, and the particles are captured by the magnetic lines (9).

When a current is applied to a magnetic wire (9) placed in a magnetic field, an electromagnetic force F acts in a direction perpendicular to the direction H of the magnetic field and the magnetic wire (9), as shown in FIG. Therefore, the magnetic line (
When an alternating current l is applied to the magnetic wire (9), the magnetic wire (9) vibrates.

The magnetic wire (9) has various vibration shapes 17 as shown in FIG.
1 (vibration mode), and each vibration mode has a corresponding natural frequency.

By passing an alternating current having a plurality of natural frequencies as components through the magnetic wire (9), it is possible to uniformly vibrate the magnetic wire (9) with a small current value.

When the magnetic wire (9) vibrates as described above, the magnetic particles repeatedly adhere to and separate from the magnetic wire (9) due to inertial force and liquid resistance force.

On the other hand, as shown in Figure 2, the magnetic field is formed to monotonically increase in the X-axis direction, which is the axial direction of the magnetic line (9), so the X-axis is proportional to the strength of the magnetic field and the magnitude of the magnetic gradient. A magnetic attraction force in the direction acts on the magnetic particles, and the magnetic particles attract magnetic lines (
9) is conveyed above in the X-axis direction, passes through the through hole of the partition plate (6), and is guided to the second room (8).

In the second room (8), the magnetic particles become magnetic,! (9) and drain through the drain pipe (5). On the other hand, the liquid that has passed between the magnetic lines (9) and from which magnetic particles have been removed flows out through the outflow pipe (3). In this way, the magnetic particles are separated and removed from the liquid containing the magnetic particles.

〔Effect of the invention〕

As described above, according to the present invention, a plurality of frequency components are transmitted to a plurality of magnetic lines that are stretched parallel to each other in a filter container into which a fluid containing magnetic particles flows, and intersect with a magnetic field whose strength monotonically increases. Since the structure is configured such that an alternating current is applied, a repeated state in which the magnetic particles captured by the magnetic wires are attached to and detached from the magnetic wires occurs uniformly and reliably within the filter container.

Therefore, it is possible to obtain a magnetic filter device that can easily transport magnetic particles captured by the magnetic wires on the magnetic wires.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of an embodiment of the invention of B, Fig. 2 is a line diagram showing an example of the distribution of magnetic field strength in a magnetic wire, and Fig. 3 is a diagram showing an example of the distribution of magnetic field strength in a magnetic wire. An explanatory diagram of the electromagnetic force acting on the magnetic wire C, FIG. 4 is an explanatory diagram of the vibration form of the magnetic wire whose both ends are fixed, FIG. 5 is a perspective view of a conventional magnetic filter device, and FIG. 6 is a cross-sectional view thereof. It is. In the figure, (1)...filter container, (2)...inflow pipe, (3)...outflow pipe, (4)...water supply pipe, (5)...
)...drain pipe, (6)...partition plate, (7)...first room, (8)...second room, (9)...magnetic wire, scream...Ti pole , α... Adder, (support)... Frequency oscillator, α3)... Amplifier, α4: Oscillator, Scream... Magnetic pole. Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent Patent Attorney Masuo Oiwa 1 Figure 1 Sex Line Axial Front Figure 3 Figure 4 Rte 1 11 Absence 1ul! l Need 10 and 222〉N, Uni, 20 2nd solid tumor movement mode 5th
figure

Claims (3)

[Claims] (1) A filter container, a plurality of magnetic wires stretched in parallel within the filter container, a means for generating a magnetic field that intersects these magnetic wires and increases in the axial direction of the magnetic wires, and magnetic particles. means for causing the mixed fluid to flow into the filter container and pass through the gap between the magnetic wires to trap magnetic particles in the magnetic wires; A magnetic filter device comprising: a means for promoting transport of magnetic particles that vibrates and moves the captured magnetic particles in one direction on the magnetic wire; and a means for separating the magnetic particles from the magnetic wire and ejecting the magnetic particles. (2) The magnetic particle transport promoting means is configured to energize the magnetic wire having a single frequency or a plurality of frequency components to transport the magnetic particles on the magnetic wire. magnetic filter device. (3) A claim in which the inside of the filter container is divided into a first and second chamber by a partition plate having a plurality of through holes, and the magnetic wire is stretched through the through holes inside the filter container. 2. The magnetic filter device according to item 1.